What is CVE-2022-33738?

CVE-2022-33738 is a high-severity vulnerability in Openvpn Access Server, classified under Insufficient Entropy. CVSS score: 7.5/10. Published 2022-07-06.

How severe is CVE-2022-33738?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Openvpn Access Server

CVE-2022-33738

OpenVPN Access Server before 2.11 uses a weak random generator used to create user session token for the web portal

Published 2022-07-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000

Affected products

Openvpn Access Server
Openvpn Access Server — versions until 2.11

Weakness classification (CWE)

References

openvpn.net/vpn-server-resources/release-notes/ (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2022-33738?: CVE-2022-33738 is a high-severity vulnerability in Openvpn Access Server, classified under Insufficient Entropy. CVSS score: 7.5/10. Published 2022-07-06.
How severe is CVE-2022-33738?: High severity. CVSS v3 base score is 7.5 out of 10.